326 INSECTS INJURIOUS TO THE STRAWS ERR V. 



bright-yellow spots, two or more on each segment, and below 

 these, and close to the under surface, a bright-yellow band, 

 deeply indented on each segment. Spiracles white. There are 

 also a few whitish dots scattered irregularly over the surface 

 of the body. This caterpillar is so conspicuous for its beauty 

 that it is sure to attract the attention of every beholder. 

 As soon as it is full grown, it draws together a few leaves 



Fjo. 33''. 



or other loose material, and, with the aid of some silk, con- 

 structs a rude case (6, Fig, 337), within which it changes to 

 a dark-brown chrysalis. The caterpillars of the fall brood, 

 which become chrysalids early in September, do not produce 

 moths until June following. There are two broods during 

 the season, but the members of the early one, being less 

 abundant, are not so often seen as those of the later brood. 



The moth, which is represented at c in the figure, is a very 

 plain-looking insect. Its fore wings are gray, with a row of 

 blackish dots along the hind border. A broken, blackish, 

 zigzag line, sometimes indistinct, crosses the wing beyond the 

 middle, and there are some darker grayish spots about the 

 middle of the wing ; the hind wings are white. 



